Device for upsetting set-screws, cap-screws, and the like.



`T.FERRY.

DEVICE for: uPsmm su scaws, CAP scaews, AND THE LIKE.

APPLICATION FILED MAY 25. 1909. 1,146,145, Patented July 13, 1915.

2 SHEETS-SHEET l. 1+ 2 T. FERRY.

DEVICE FOR UPSE NG SET WS, CAP SCREWS, AND THE LiKE.

D MA

cATlo Y 25. 1909. 1,146, 1 45. Patented July 13, 1915.

k 2 SHEETS-SHEET 2.

/9 Y 725L y? iff/m2555515# /VVEWTOR,

4 ATTE?.

THOMASFEBB'Y, OF CLEVELAND, O-HIO.

DEVICE FOB UPSETTING SET-SCREWS, v(.'LAIP-SCBENTS, AND THE LIKE.

Appiioanon med may 25, 1909. serial No. @5.347.

To all 'whom 'it may concern B e it known that I, THOMAS FERRY, acitizen of the United States of America, residing at Cleveland, in `thecounty of Cuyahoga and State of Ohio, have invented certain new anduseful Improvements in Devices for l Upsetting Set-Screws,A Cap- Screws,and the like; and I hereby declare' the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in theart to .which` it pertains to make and use the same.`

rI his invention relates to a .device for ilpsetting or heading blanksfor cap-screws, set-screws and the like.

With the devices heretofore employedonly a limited portion or length ofthe` blank or stock can be upset to form the head, or, inother words,the size of the head for a certain diameter of material is limited, forthe reason that if it is attempted to upset a greater length ofmaterial, the punch or upsetting dieon striking the end of the blankwill cause the latter to buckle or bend resulting in a very imperfect orunsymmetrical head being formed. Consequently, if a head of a sizelarger than that which can be obtained by the usual upsetting devices isdesired the bolt or screw must be machined out of larger stock than isdesired for the shank, or the head must be welded to the shank.

The object of the present l-inventionis to provide a device .forupsettingA or heading vblanks for cap-screws, set-screws or the like bywhich a much greater length of material can be upset to form the vheadthan is possible with the devices heretofore employed. My inventiontherefore consists in providing a die for holding the blank which is tobe headed so that one end of the blank projects beyond the face of thedie, said die being provided with a cavity in which the head of theblank is formed, means for surrounding the projecting end of the blank,means for imparting a blow on the end of the blank while surrounded soas to partially upset the blank and means for imparting a second blowafter the surrounding means has been removed to complete the upsettingof the blank.

My invention further consists in the features of construction andcombination of parts as described in the specication, pointed out in theclaim and illustrated in the accompanying drawings.

For a better understanding of my inven- Specication of Letters Patent.

Patented Juiiei 5.

tion reference is had to the accompanying i drawings in whichf- Figure 1is a side elevation of an upsetting machine with parts thereof insection. Fig. 2 is an enlarged detail in section showing the dies inposition for performing the first step of the upsetting or headingprocess.

Fig. 3 is a section on line 33, Fig. 4. Fig.

4 is a view similar to Fig. 2 showing the parts in position when thefirst step in the upsetting process has been performed and showing theblank or stock partially upset. Fig. 5 is a sectional View similar toFigs. 2 and 4 showing the parts in position when the process ofupsetting is completed and showing the'blank or stock with the upsettingcompleted.

Referring now to the figures of the drawings 10 represents a part of theframe of the machine provided at the top with a guideway 11. Suitablymounted .at one end of the frame is a main operating shaft 12, which isprovided with a crank 13 to which is attached one end of a connectingrod or pitman 14. Mounted to slide in the guide way 11 and `adapted tobe reciprocated by the connecting rod is a cross head or slide connectedat 16. t the end of the slide 15 is a die or punch holding block 17which is adapted to be reciprocated by the slide 15, and also to movevertically with respect theretoas will be explained. The block 17 has anenlarged lower face 17a which is adapted to be engaged by mechanism tobe explained to shift the block vertically. Secured tothe top of theblock 17 is a guiding and holding member 18 provided with a por# tion 18which extends over the slide or cross head 15 and aprtion 18b at rightangles to the portion 18a and extending downward into an open slot 18cin the top of the slide or cross head. rllhe engaging members 15, 17 and18 are carefully mashined, so that although the block 17 is held againstthe end of the slide or cross h ead 15 by the portion 18b of the member18, 1t may slide upward and downward across the endif of the cross head.Secured to the block 17 y punches desigare head forming members or themember 20 nated 19 and 2O respectively, being member 19 as will beexplained more fully partially accomplishes the upsetting at one facesof theV` directly below the member 19. The

blank and at.v the ysecond stroke this punch completes the upsettingprocess.

At the end of the frame is a die 21 which is provided with a passageway21,adapted to receive the blank and4 at its outer face with a cavity 2lbin which the head of the bolt or rivet is formed, the shape of thecavity being in this case such as to form a so-called .square head. The

hereinafter appear. lThe passageway 21a and cavity 21h are directly inline with the head forming member 19 when the block 1.7 is in itslowermost-position. The end of terior of the sleeve 24 ting process sothat the nplunger25 surthe framel against which thel die rests is.provided with a. passageway 22 in line with the passageway 21a andentering the passageway inthe die is a pin 23 which forms a backing forvthe blank when the head is formed and kicksthe blanks out of thev diewhen the upsetting is completed. The mechanism for accomplishing thelatter will be explained later.

The upsetting member 19 is provided with a sleeve or tubular member 24which is fixed at one end in the block 17 and is provided on theexterior near the outer end with a reduced portion 24?D forming ashoulder 24h. The" interior of the tubular member 24 vis of twodiameters the inner end being larger than the outer forming im theinterior a shoulder 24. Slidably mounted 'on the in- The plunger ger isnormally held in its outer position by means of a coil spring 27 whichsurrounds the outer end of the holding sleeve andthe 4 its innermostwill engag`e the block 17 at the same time Athe shoulderA 25'? engagesthe outer' end ofl the adjacent portion 'of the plunger and bears.

against the shoulder 24h and the shoulder 25a.' lIn the .bore`26 of theplunger 24 is farranged a punch 28fwhich ispreferably so arranged astoslide freely therein, but its outward movement is 'limited by. a head288L on .its-inner end adapte'dto engage the inner end ofthe plunger.The punch'28 is shorter .than the position the end of the .plungerholdingsleevez24. The punch or upsetting 'rne`mber20is simply a'hardened steel block:A

havmgaIat-OUter face anlgrigidlymounted on theblock 17. l' .Y

passageway 21'*l is enlarged at 21c for a purpos'ewhich will .ontheblank. When the gear 29 and itting.l closely 'will make one 4revolutionplunger 2,5 so that4 when the spring .27 iscom'pressed andthe plunger25is in the plunger 36.

The mechanism for raising the block or punch holding member 17 after therst stroke or after the upsetting is partially completed by the member19, and the mechanism for kickingthe headed bolt or rivet out of thedieafter the heading or upsetting is completed will now be described.Mount- Aed uponthe Ymainrshaft 12 is a gear wheel a second gear wheel 29which meshes with. 29 mounted upon a shaft 30 which is-below the mainshaft 12.. Mounted upon a shaft 31 near the op osite end ofthe mechanismand below the lock 17 is a cam 32 which isv adapted toengage the lowerface of the block 17 so asto raise the latter at the to the gear wheel29 by means of a connecting rod 33, so that when the gear 29 isturnedthrough a quarter revolution in the direction indicated bythearrow the wrist pin thereof will travel to the point 'm and the wristpin of the cam 32 will travel 'to a. The working end of the cam 3 2willswing up thereby shoving up the member 17 which brings the punch20inposition to operate completes the next quarter revolution the thereoftravels to y and the wrist pin of the cam 32 will travel back to itsoriginal position, and the cam 32 will be rocked back `and downto its'original positionA permitting them'mber 17'to the third quarter revoluthereofreaches the point and the wrist wrist pin move back to its lowerpo" l l sition. When the gear 2 is turned through iiion the wrist.Apint.

pin of the cam 32 will be at b and .when the' I gear 29 is turnedthroughthe fourth quar- 1 ter revolution the wrist pin thereof is back to itsoriginal position and the wrist pin of the cam.32 will be again 1n itsoriginal pothat during the last half revolution l of 'the gear 29 .thecam 32 will move idle. l

The gear4 wheel 29 is preferably twice the size of the gear wheel 29 sothat the former wheel 29 will make two revolutions.

In order that-the blank may be` kicked out of the diewhenthe headingorupsetl ting is completedl I extendsinto .the passagewayr` or borej ofthe connect the pin 23 which die from therear, to one end of av lever34?y which is pivotedintermediate its ends on the frame of the'machineat 35 and is connected at its opposite end toa plunger 3 6 which isslidably'ln'ountedl in the .frame of the machine When the and carries atits inner-end av roller 37 whichengages a cam 38v (shown by' dottedlines in-Fig. 1) mounted on the shaft 31. AThevlower end'. of the lever34.'and`the plunger' 36 v. a1fef hel1*in their innermost .posiv-if'tions byjmeans off-a Spring 39, the nwarfzfff :movement beinglimited'by aiiange' 36* 'on .V parts are in this position thepin 23i'sheldln its outermostA 13o 80 l proper time tol present the punch 20ltothe n blank.. The cam 32 is connected 1n this case after the secondstroke of the slide or cross head 15 land after the punch 20 hascompleted the upsetting.

The operation of the machine will now be described more fully. Vhen theblank -which is shown in Fig. 2 is placed in the die and before thebeginning of the stroke which forms the first part of the upsetting, theparts are in the position shown in Fig. 1. the heading member 20 beingin line with the blank. As the-'slide 15 moves forward and the plunger24 approaches the die, the end of the blank which projects beyond thedie enters the passageway in the end of the plunger 25, the passagewaybeing just large enough to permit the end of the blank to pass freelytherein: As the slide and the parts carried therebyT continue toward thedie, the end of the plunger engages the face ot' the die and the end ofthe punch 25b engages the outer end of the blank, the parts then beingin the position shown in Fig. 2.

` Further movement of the parts causes the plunger to slide inwardrelative to the sleeve against the tension of the spring, and as theinner end of the punch is in engagement,l

with the block 17, the metal of the blank is .f-ompressed, but as theouter end of the "mink is surrounded by the end of the plunger this partcannot be upset, and as the metal will expand along the lines of leastresistance, the force of the blow causes the metal intermediate the endsof the blank to expand outwardly and partially lill the cavity in thedie. The position oi, the parts at this stage of the upsetting processis shown in Fig'. 4, and the shape of the head so far formed is shown inFig. 3. vThe heading member 20 is then drawn away from the die 21 bythereturn stroke of the slide or cross head. During the second stroke ofthe latter the block 17 is shifted by the cam 32 and at the completionof the second stroke the punch 20 strikes the end of the blank andcompletes the upsetting, completely filling witnesses.

the head cavity 21b and the enlargement 21 of the passageway 21a. At thecompletion of the second stroke the parts are in the position shown inFig. 5. During-the return movement of the cross head or slide after thesecond stroke the blank is kicked out of the die by the inward movementof the pin 23 caused by the cam 38 engaging the roller on the end of theplunger 36 and shifting the lever 34. When the headed blank is knockedout of the die it willhave the usual flash around the head which istrimmed off and the shank is then threaded preferably by rolling athread thereon.

What I claim is,-

In an upsetting machine, the combination with a stationary die providedwith an opening for the reception of a blank, said opening terminatingat the face of the die in a head forming cavity, a carriage movabletoward and away from said die and means for actuating said carriage, ofan upsetting device mounted on said carriage, Said device comprising anouter tubular member, an inner member arranged in said outer .member andfree to slide and provided with a bore arranged to register with theblank receiving opening in the die block and of the same diameter as theblank receiving opening, a plunger slidably arranged in the bore in saidinner member and movable independently of the outer and inner membersand an abutment arranged at the rear of said outer member and adapted tohave positive contact with the rear end of the plunger during theforward movement of the carriage and with the rear end of the innermember near the completion of the forward movement of the carriage andforce both the said plunger and said inner member against the blankwhich is being operated on.

-In testimony whereof, I sign the foregoing speciication, in thepresence of two THOMAS FERRY. Witnesses:

VICTOR C. LYNCH,

N. MCDONNELL.

